/*
 * Copyright 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package es.chaveweb.poZit.server.domain;

import java.io.InputStream;

import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;

/**
 * Factory for creating EntityManager.
 */
public final class PMF {
	private static PersistenceManagerFactory pmfInstance;

	public static PersistenceManagerFactory get() {
		if (pmfInstance == null) {
			InputStream rdbmsJdoConfig = PMF.class.getResourceAsStream("/mysql-rdbms.jdoconfig.properties");
			pmfInstance = JDOHelper.getPersistenceManagerFactory(rdbmsJdoConfig);
		}
		return pmfInstance;
	}

	private PMF() {
		// nothing
	}
}
